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The battery power pack.

 
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gwyn1946



Joined: 14 Sep 2007
Posts: 23
Location: west yorkshire

PostPosted: Sat Apr 30, 2016 7:02 pm    Post subject: The battery power pack. Reply with quote

After reading reading Pauls article i ordered two of the recommended HI-Q PWM
motor controllers off E-BAY,UK supplier 6.49 each free delivery to be collected from my local Argos on Wednesday.
I am looking for a battery power source for a small shunty plank.
I am trying to make it cable free.
I will try it out first using a 6v Gell cell lead acid battery, i use several different sizes of these in my model RC boats.
I had a controller built for me by our avionics engineer about 12 yrs ago and with a 6.4 amp Gell cell gave lovely controllable slow speed running with my Athern Baldwin and SW7 switchers,but a few yrs ago i managed to short it out!
This time it is N guage switcher.
The build article came from an old Model Railroader, 70's as i remember.
This modern unit will hopefully be as good.
The battery will be mounted to the planks underside or in a building,if 6 volt proves to be lacking then i will use the 9 volt rechargeable PP3 types.
I have a few different chargers!!
Has any body else built one of these?
Don.
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don,still trying to finish a modelrailway after 40yrs.!!!!
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cloggydog



Joined: 29 Apr 2013
Posts: 9
Location: Reading, UK

PostPosted: Wed Sep 28, 2016 2:45 pm    Post subject: Reply with quote

I've built something similar - but handheld, using a Really Useful Box 0.2l plastic box, mounting the PWM unit and a dpdt switch through the lid with a 6 x AA battery pack providing the power. As I'm using the same unit on a (growing) selection of micro layouts, there's an output socket at one end, into which different fiddlesticks will plug (using 5.5mm/2.1mm plug & socket sets)

I found a single PP3 would drain very, very quickly, so now use 6 x rechargeable AA (Amazon basic 2400 ma/hr) - I easily get a full weekend's running on a shunting micro with a variety of traction (vintage and modern). the 8v(ish) at rail is plenty for shunting layouts, but there is (just) space in the box for 8 x AA if you need more oomph.

Total cost was about 5 (not including batteries)

I've written it up and taken some pics, all fired off to Chris F for inclusion in SRI.

DSC_0450 by Alan Monk, on Flickr

This is the v1.0, large dpdt and 4 x AA.
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Some assembly required. Batteries not included. Contains scenes of nudity & mild peril. May cause drowsiness. Suitable for vegetarians.
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gwyn1946



Joined: 14 Sep 2007
Posts: 23
Location: west yorkshire

PostPosted: Thu Sep 29, 2016 11:37 pm    Post subject: Reply with quote

Very neat,i look forward to the forthcoming SRI.
Don.
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don,still trying to finish a modelrailway after 40yrs.!!!!
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